User Manual

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Table Of Contents

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OXY-REG with DO-SET (optional)

Oxygen Analyzer and Regulator System

User manual version 2.4.1

The OXY-REG system is used for monitoring and regulating dissolved oxygen content of sea or

fresh water in fish tanks, respirometers, aquaria etc.

LIST OF PARTS

1) Controller instrument

2) Data cable

3) MINI-DO galvanic cell oxygen probe

4) Maintenance kit for O

probe

5) Membrane tool

6) Power cord

7) Converter piece

8) User manual

9) DO-SET (OPTIONAL)

- Solenoid valve w/push-in fittings

- PU tubing

- Air stone

CONTENTS

LIST OF PARTS .............................................................................................................. 1

CONTENTS ................................................................................................................... 1

SETUP .......................................................................................................................... 2

CONFIGURATION / OPERATING THE FUNCTION KEYS ........................................................ 3

CALIBRATING THE OXYGEN PROBE .................................................................................. 6

MAINTENANCE .............................................................................................................. 7

RENOVATING PROBE ..................................................................................................... 7

USING THE RELAYS ....................................................................................................... 8

FAST SET POINT ADJUSTMENT ........................................................................................ 3

PASSWORD PROTECTION ............................................................................................... 9

DEFAULT SETTINGS ..................................................................................................... 10

USING THE CONTROLLER FOR DATA ACQUISITION ......................................................... 10

CHANGE OXYGEN UNITS .............................................................................................. 10

OXY-REG SPECIFICATIONS ........................................................................................... 11

MINI-DO SPECIFICATIONS ........................................................................................... 11

Summary of content (12 pages)

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OXY-REG with DO-SET (optional) Oxygen Analyzer and Regulator System User manual version 2.4.1 The OXY-REG system is used for monitoring and regulating dissolved oxygen content of sea or fresh water in fish tanks, respirometers, aquaria etc.
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SETUP Connect the MINI-DO galvanic oxygen probe to the input labelled IN on the front side of the OXY-REG instrument. Now connect the power cord to the input labelled POWER on the backside of the OXY-REG instrument. The OXY-REG will now turn on, and start reading oxygen values. There are two relays on the backside of the instrument which can be used to control the activity of a solenoid valve to regulate oxygen saturation in the water.
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CONFIGURATION / OPERATING THE FUNCTION KEYS The OXY-REG is a menu-driven instrument. The front panel has three buttons for operation, e.g. two arrow buttons (Λ and V) and one OK button. Use these three buttons to scroll through the menu and accept instrument settings. For each menu there is a scrolling help text which is automatically shown in the display, this starts after five seconds if no key has been activated. Use the menu to calibrate the oxygen probe, and set relay action and level of control.
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CALIBRATING THE OXYGEN PROBE A galvanic type oxygen probe is stable and quite rugged, but it sometimes need re-calibration like all other oxygen sensors in order to adjust for signal drift. Standard two-point calibration procedure 1. Connect the probe to the oxygen instrument and turn on the instrument. 2. Place the tip of the probe in a mixed air-equilibrated water sample. This can be achieved by purging atmospheric air into sample water, e.g. with an air pump and air stone. 3.
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MAINTENANCE Between sample measurements, immerse the tip of the probe in distilled water. For long-time storage keep the probe in a dark and moist environment to avoid the very small volume of electrolyte fluid (c. 0.1 ml) from evaporating and to protect the membrane from direct sunlight. It is also a good idea to short-circuit the two signal wires to avoid deterioration of the probe anode.
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USING THE RELAYS The OXY-REG instrument has two independent relays to control the activity of solenoid valves. For each relay choose a set point and a hysteresis value. Now decide if the relay should be activated when the signal drops below a set point (DECR), or if it should be activated when it rises above (INCR), e.g. for hypoxic control the relay should act on a increasing (INCR) signal, since oxygen saturation will increase above the set point due to atmospheric re-equilibration.
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5. Press the OK button several times until the display reads REL1. Wait for one second, and the display now reads SET, or toggle using arrow buttons until it reads SET, and then press OK. 6. Now use the Λ or V buttons to increase or decrease the set point value. Set it to 90 (% air saturation), and then press OK. 7. Set the action of the relay to DECR, and then press OK. 8. Now enter the hysteresis value. Use arrow buttons to set the value to 1%, and then press OK. 9.
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DEFAULT SETTINGS The OXY-REG instrument is delivered with the following default settings: INPUT TYPE: DECIMAL POINT: DISPLAY LOW VALUE: DISPLAY HIGH VALUE: RELAY 1 UNITS: REL1 SETP ACT HYS ON.DE OF.DE REL2 SETP ACT HYS ON.DE OF.DE ANALOG OUTPUT: RESP E.PASS N.PASS POTMETER 111.1 0.0 100.0 DISP 50.0 DECR 1.0 0 0 50.0 INCR 1.0 0 0 4-20 (converted into a 0-5V instrument output) 0.
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OXY-REG SPECIFICATIONS Supply voltage (universal): Internal consumption: Max. consumption: Isolation voltage (test / operation): Signal- / noise ratio: Response time, programmable: Calibration temperature: Accuracy: Temperature Coefficient: EMC immunity influence: Potentiometer input, min: Potentiometer input, max: Relay function: Hysteresis, in % / display counts: On and Off delay: Sensor error detection: Max. voltage: Max. current: Max. AC power: Max. current at 24 VDC: 21.6-253 VAC, 50-60 Hz or 19.
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